Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abd7a01a5e6b381…

MALICIOUS

PDF

83.1 KB Created: 2021-09-13 23:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3d08820d3093274d491d5e4431fdf7e9 SHA-1: 6c9b692b25d42e45ab7fc1b9a11664e14b9cca07 SHA-256: 6abd7a01a5e6b3812a37b718c5ff4eebf81ec1b6174a0fe19f2ea85268f82300
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload storage, suggesting a link farm designed to lead users to malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely provides instructions to decrypt a password-protected archive, a common tactic to evade initial security gateway scanning. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://le-lemniscus-incandescent.fr/ckeditor/upload/files/xitomipisaguk.pdf In PDF document text
    • https://rubenferro.com/userfiles/file/27362221978.pdfIn PDF document text
    • https://eetravel.net/file/67281845438.pdfIn PDF document text
    • http://z500.si/files/kixuketepezakotobijote.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/161381e3ee6eb6---dadodadedes.pdfIn PDF document text
    • https://atputasbaze.lv/images/userfiles/files/91533516192.pdfIn PDF document text
    • https://deitratech.com/userfiles/file/98557848701.pdfIn PDF document text
    • http://amongelite.com/ci/userfiles/files/44989052344.pdfIn PDF document text
    • http://supair-lux.hu/ckfinder/userfiles/files/28532969311.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/16134d84d02ad2---11980715214.pdfIn PDF document text
    • http://barefoot.pl/userfiles/file/nukasut.pdfIn PDF document text
    • https://testgit.begurholidays.com/uploads/userfiles/files/17039957956.pdfIn PDF document text
    • http://leebyenghun.com/new/upload/board/files/megolimorisimu.pdfIn PDF document text
    • https://ddc-touggourt.dz/ar/files/55398496110.pdfIn PDF document text
    • https://cristalparkhotel.com.ve/ckfinder/userfiles/files/52212265234.pdfIn PDF document text
    • http://lecostationery.com/files/file/72964589603.pdfIn PDF document text
    • http://duoctruongxuan.vn/userfiles/image/file/pizoze.pdfIn PDF document text
    • https://suncables.co/images/file/sisemotijedovewew.pdfIn PDF document text
    • http://seamacros.com/upload/file/33773236199.pdfIn PDF document text
    • https://dolphinsolutions.net/ckfinder/userfiles/files/mobaremopoxorukika.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613578b04d0cc---91146535991.pdfIn PDF document text
    • http://bxbrdh.marketsearching.com/upload/files/febumodakavuzokuvu.pdfIn PDF document text
    • http://studio-orlandini.com/userfiles/files/lasenivaxejuver.pdfIn PDF document text
    • https://aodaixuan.vn/app/webroot/upload/image/files/fenerozisozof.pdfIn PDF document text
    • http://craft-personal.de/userfiles/file/fuvumuwifirubitowa.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/legux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=pokemon+omega+ruby+iso+downloadPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10D 11024 bytes
SHA-256: 74c20d966b6f3fb9293ee5d6798db03539d4bbcb2cf574b2523541f41df8c3ec
font_02_sfnt_off00010a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A80 19228 bytes
SHA-256: b1bbee35633a5a8efaa4409797c350fa4c611b7a45b0db8e2e1713c894e22c64

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